Accurate resultsVerified formulas with clear references
Smart tools for your everyday life
40 calculators6 categories
Health and wellness
HealthCalculators for your physical wellbeing
BMI Calculator
Estimate your body mass index and review your current category.
Calories Calculator
Find your maintenance calories and simple deficit or surplus targets.
Water Intake Calculator
Plan your daily hydration based on weight and activity level.
Ideal Weight Calculator
See your healthy weight range based on height and build.
Body Fat Calculator
Estimate your body fat percentage using anthropometric measurements.
Macro calculator
Convert your calories into grams of protein, carbs and fat.
One-rep max
Estimate your one-rep max from weight and reps.
Heart rate zones
Calculate your five training zones from age and resting heart rate.
Pregnancy due date
Estimate due date and current week from the last period.
Calorie deficit
Estimate the time needed to reach your goal weight.
BMR calculator
Estimate the calories your body burns at complete rest.
Visual body fat
Estimate body fat by comparing with visual references.
Creatine dosage
Calculate your daily creatine dose and optional loading phase.
Finance and money
FinanceCalculations for your money and savings
Tip calculator
Calculate the tip and split the bill between multiple people.
Savings calculator
Project your future savings with compound interest and monthly contributions.
Loan calculator
Estimate the monthly payment, interest and total cost of a loan.
Compound interest
Project how an initial capital grows with compound interest.
Mortgage calculator
Estimate your monthly mortgage payment including taxes and insurance.
Salary converter
Convert yearly, monthly, weekly or hourly pay into the others.
Profit margin
Calculate profit, margin and markup from cost and revenue.
ROI calculator
Calculate absolute, total and annualized return on investment.
Math and geometry
MathMathematical and geometry calculations
Percentage calculator
Calculate the X% of a value, apply percent changes or discounts instantly.
Area calculator
Calculate the area and perimeter of a rectangle instantly.
Age calculator
Calculate exact years, months and days between two dates.
Percentage change
Calculate the absolute change and percent change between two values.
Mean, median, mode
Calculate the main statistics of a list of numbers.
GCD and LCM
Find the greatest common divisor and least common multiple.
Random numbers
Generate random integers within a min and max range.
Unit converters
ConvertersUnit conversion tools
Temperature converter
Convert between Celsius, Fahrenheit and Kelvin.
Length converter
Convert between meters, centimeters, feet, inches, kilometers and miles.
Weight converter
Convert between kilograms, grams, pounds and ounces.
Volume converter
Convert between liters, milliliters, gallons, cups, ounces, tablespoons and teaspoons.
Speed converter
Convert between km/h, mph, m/s, knots and ft/s.
Time converter
Convert between seconds, minutes, hours, days, weeks and years.
Cooking converter
Convert cups, tablespoons, teaspoons, ounces and milliliters.
Text and formatting
TextTools to work with text
Character counter
Count characters, words, lines, sentences and paragraphs instantly.
Case converter
Convert between uppercase, lowercase, title, sentence, camelCase, snake and kebab.
Word frequency
Find the most common words in any text.
Readability score
Measure the reading ease and difficulty of a text.
Dates and time
DatesDate and time calculations
Why ToolsRL?
Easy to useIntuitive interface with instant results
Total privacyYour data stays with you, 100% private
Always up to dateInformation based on the latest research